Perfluorodialkyl Ether Synthesis With Catalyst Reuse for High Purity

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Solution Overview

Problem

The environmental impact of SF6 gas, particularly its high global warming potential and decomposition products, necessitates the development of an alternative gas with high conversion and high-purity perfluorodialkyl ether as a replacement.

Innovation Solution

A method and apparatus for preparing perfluorodialkyl ether using a metal fluoride catalyst, involving batch and continuous processes, where fluorine-containing acyl fluoride is reused to enhance conversion and purity, and a reactor system is used to isolate and discharge the product.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If perfluorodialkyl ether is prepared from fluorine-containing acyl fluoride using metal fluoride catalyst, then the conversion rate and purity of perfluorodialkyl ether are improved, but the cost of continuously supplying fluorine-containing acyl fluoride increases

Engineering Contradiction:

Improvepurity of perfluorodialkyl etherVSAvoidcost of fluorine-containing acyl fluoride

Core Design Contradiction:

Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The patent recovers and reuses metal fluoride catalyst from the reaction mixture after perfluorodialkyl ether synthesis. The catalyst is separated from the product through filtration or decantation, then reused in subsequent reactions, reducing material costs and improving process efficiency

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The patent employs continuous supply of fluorine-containing acyl fluoride reactant to maintain steady-state reaction conditions, ensuring consistent high purity product while optimizing conversion rates through continuous catalytic action of metal fluoride

Inventive Principle:

Principle #20Continuity of useful action

2Ease of manufacture

If perfluorodialkyl ether is prepared by repeatedly reusing metal fluoride, then the production cost is reduced, but the accumulation of impurities and degradation of catalyst activity occurs

Engineering Contradiction:

Improveproduction costVSAvoidcatalyst activity

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent implements periodic regeneration or replacement of metal fluoride catalyst at scheduled intervals. The catalyst undergoes cyclic use-regeneration cycles, where it is periodically treated to remove accumulated impurities and restore activity, balancing cost efficiency with performance maintenance

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent incorporates monitoring of catalyst activity through product purity analysis and reaction rate measurement. When catalyst performance drops below threshold levels, the system triggers catalyst regeneration or replacement, ensuring consistent product quality while optimizing resource utilization

Inventive Principle:

Principle #23Feedback

3Reliability

If SF6 gas is used as insulating gas, then the dielectric strength and thermal blocking efficiency are improved, but the global warming potential increases significantly

Engineering Contradiction:

Improvedielectric strengthVSAvoidglobal warming potential

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent converts the environmental harm of SF6 gas into a benefit by developing perfluorodialkyl ether as an alternative that maintains the essential dielectric and thermal properties of SF6 while eliminating its high global warming potential, thus transforming an environmental problem into a sustainable solution

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The method achieves high conversion and purity of perfluorodialkyl ether, providing an environmentally friendly alternative to SF6 gas suitable for industrial applications without additional equipment costs.

Implementation Method 1

preparing a perfluorodialkyl ether from a compound represented by Formula 1 below in a presence of a metal fluoride

Methodology Applied

Scientific EffectCatalysis: Catalysis

Implementation Method 2

isolating the perfluorodialkyl ether

Methodology Applied

Scientific EffectPhase separation: Phase Change

Data Source

PatentUS12540111B2Method for preparing perfluorodialkyl ether and apparatus for preparing perfluorodialkyl ether

Publication Date: 2026.02.03 KOREA RES INST OF CHEM TECH

AI summary

The present invention relates to a method for preparing a perfluorodialkyl ether, comprising the steps of: (A) preparing a perfluorodialkyl ether from a compound represented by Formula 1 in the presence of a metal fluoride; and (B) isolating the perfluorodialkyl ether, and to an apparatus for preparing perfluorodialkyl ether, comprising: a reactor for preparing a perfluorodialkyl ether from a compound represented by Formula 1 in the presence of a metal fluoride; a reactant supplier for introducing the compound represented by Formula 1 into the reactor; and a discharge unit for discharging the perfluorodialkyl ether from the upper portion of the reactor.